Michael of Greece et Helen Hemis-Markesinis, The Royal Hellenic dynasty : From the Collection of Mrs. Helen Helmis-Markesinis, Eurohistory, 2007, 201 p.
Saintes-Olga-et-Sophie. (en) Arturo B. Eéche, Michael of Greece et Helen Hemis-Markesinis, The Royal Hellenic dynasty, Eurohistory, 2007, 182 p. (ISBN 978-0-9771961-5-9
Jack Brooksbank. (en) Arturo B. Eéche, Michael of Greece et Helen Hemis-Markesinis, The Royal Hellenic dynasty, Eurohistory, 2007, 182 p. (ISBN 978-0-9771961-5-9
(ISSN 1653-5219). (en) Arturo E. Beéche, Michael of Greece et Helen Hemis-Markesinis, The Royal Hellenic dynasty, Eurohistory, 2007, 182 p. (ISBN 978-0-9771961-5-9